Selection bias

Selection bias is the bias introduced by the selection of individuals, groups, or data for analysis in such a way that the association between exposure and outcome among those selected for analysis differs from the association among those eligible.[1] It is sometimes referred to as the selection effect. If the selection bias is not taken into account, then some conclusions of the study may be false.

  1. ^ Hernán, Miguel A.; Hernández-Díaz, Sonia; Robins, James M. (September 2004). "A Structural Approach to Selection Bias:". Epidemiology. 15 (5): 615–625. doi:10.1097/01.ede.0000135174.63482.43. ISSN 1044-3983.
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